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arXiv 2212.01264hep-thhep-lat
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SU(N)分数瞬子

SU(N) fractional Instantons

Jorge Luis Dasilva Golan, Margarita Garcia Perez

摘要:

本文研究了具有分数拓扑荷的$SU(N)$ Yang-Mills运动方程的一组解。通过最小化梯度流技术在具有扭曲边界条件的尺寸为$l^2\times(Nl)^2$的环面上的作用,数值地获得配置。我们特别注意的大$N$极限,这是沿着一个非常特殊的序列,与颜色$N$和磁通量$m$的数量分别选择作为$n$ -th和$n-2$条款的斐波那契序列。我们讨论了解的大$N$标度,并分析了几个作为Polyakov环的规范不变量。我们还讨论了所谓的哈密顿极限,其中一个大的方向发送到无穷大,这些瞬子表示不等价的纯规范配置之间的隧穿事件。

英文摘要:

We present our study of a set of solutions to the $SU(N)$ Yang-Mills equations of motion with fractional topological charge. The configurations are obtained numerically by minimizing the action with gradient flow techniques on a torus of size $l^2\times(Nl)^2$ with twisted boundary conditions. We pay special attention to the large $N$ limit, which is taken along a very peculiar sequence, with the number of colors $N$ and the magnetic flux $m$ selected respectively as the $n$-th and $n-2$ terms of the Fibonacci sequence. We discuss the large $N$ scaling of the solutions and analyze several gauge invariant quantities as the Polyakov loops. We also discuss the so-called Hamiltonian limit, with one of the large directions sent to infinity, where these instantons represent tunneling events between inequivalent pure gauge configurations.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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